911126-35-7Relevant academic research and scientific papers
Formation of Fischer-type aminocarbenes by a double C-H bond activation of a methylamino group
Carrion, M. Carmen,Garcia-Vaquero, Ernesto,Jalon, Felix A.,Manzano, Blanca R.,Weissensteiner, Walter,Mereiter, Kurt
, p. 4498 - 4503 (2006)
The reaction at room temperature of [RuCl2(PPh3) 3] and the ferrocenyl aminophosphine ligand PAPF leads to the product [RuCl2(PPh3)(PAPF)], 1c, in equilibrium with the starting materials. A shift of the reaction toward the formation of le was observed with temperature. At 130°C, le was transformed into the chelate aminocarbene complex [RuCl2(PPh3)(PAPF-c)], 2, after a double C-H activation of the aminomethyl fragment. Complex 2 exhibits in the solid state a strong agostic interaction (X-ray structure determination) that is also maintained in solution. An intermediate of the transformation of 1 into 2 has been observed in solution. When complex 2 is heated in DMSO, displacement of the PPh3 ligand by DMSO takes place, while the agostic interaction remains unchanged. The similar complexes [RuCl2-(PPh 3)(PN)], with the ligand PPFA or PTFA, did not undergo any transformation upon heating and the aminocarbene group was not formed.
